Robust coefficient computation for analog interference rejection

摘要

Aspects of the disclosure relate to interference cancellation. A method for performing interference cancellation in a wireless device having a receiver, a coefficient controller, and an analog interference cancellation (AIC) circuit, comprising: utilizing a receiver to receive a transmitted signal; Computing a first cost function value using a first set of coefficients, computing a second set of coefficients using a first coefficient control algorithm, computing a second cost function value using a second set of coefficients Comparing the second cost function value to a first cost function value and utilizing the coefficient controller to determine whether to apply the first set of coefficients or the second set of coefficients based on the comparison; And to utilize the AIC circuitry to apply either the first set of coefficients or the second set of coefficients to filter the reference signal and to subtract the filtered reference signal from the received transmit signal for interference cancellation And utilizing the receiver.